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Toxicity and Ecological Risks of Emerging Contaminants in the Marine...
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Toxicity and Ecological Risks of Emerging Contaminants in the Marine Environment

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Ecotoxicology".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 9318

Special Issue Editors

Prof. Dr. Ying Wang

E-Mail Website
Guest Editor
National Marine Environment Monitoring Center, Ministry of Ecology and Environment, Dalian, China
Interests: marine ecotoxicology; zooplankton; mechanisms of toxicity; marine water quality criteria; ecological risk assessment of chemicals
Prof. Dr. Guanghui Ding

E-Mail Website
Guest Editor
College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian, China
Interests: aquatic toxicity; environmental behaviors and fate of oil spill and the emerging pollutants in the estuary and adjacent coastal environment; fabrication of functional carbon nanotubes/polymer nanocomposites and their applications in water and wastewater treatment

Special Issue Information

Dear Colleagues,

Emerging contaminants (ECs), including microplastics/nanoplastics, endocrine-disrupting chemicals (EDCs), perfluoroalkyl compounds, personal care products and pharmaceuticals (PCPPs), perfluorinated compounds (PFCs) and organophosphorus flame retardants (OPFRs), are a group of existing pollutants in the global ocean that can be dangerous to the marine environment, and consequently to human health. Ecotoxicological research is crucial to support the science-based risk assessment and management of anthropogenic ECs in the face of ocean pollution. This Special Issue on “Toxicity and Ecological risks of Emerging Contaminants in the Marine Environment” will aim to highlight the latest advances in ECs-related marine ecotoxicology, biomonitoring and modelling studies that assess ecological risks. Authors are invited to submit original research papers, reviews, and short communications.

Topics related to ECs in the marine environment may include, but are not limited to, the following:

  1. Exposure and effects on typical marine organisms at different levels of organization;
  2. Application of omics, such as genomics, metabolomics and proteomics, to study the impact of ECs;
  3. Adverse outcome pathways or mechanisms of toxicity;
  4. Biomonitoring using biomarkers such as DNA/protein adducts, metabolites and enzymes;
  5. Impact of multiple marine environmental stressors (e.g., microplastics) associated with other chemicals or marine environmental factors on marine organisms;
  6. Water quality criteria for the protection of marine organisms and human health;
  7. Novel methods or the development of ecological risk assessment.

Prof. Dr. Ying Wang
Prof. Dr. Guanghui Ding
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Toxics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ecotoxicology
  • marine environment
  • biomonitoring
  • omics
  • contaminants of emerging concern
  • predicted-no-effect concentration
  • ecological risk assessment

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Published Papers (4 papers)

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Research

20 pages, 3410 KiB  
Article
Persistent Halogenated Organic Pollutants in Deep-Water-Deposited Particulates from South China Sea
by Jia-De Lee, Tsyr-Huei Chiou, Hong-Jie Zhang, How-Ran Chao, Kuang-Yu Chen, Yan-You Gou, Chien-Er Huang, Sheng-Lun Lin and Lin-Chi Wang
Toxics 2023, 11(12), 968; https://doi.org/10.3390/toxics11120968 - 29 Nov 2023
Cited by 3 | Viewed by 2052
Abstract
POP data are limited in the marine environment; thus, this study aimed to investigate background persistent organic pollutant (POP) levels in oceanic deep-water-deposited particulates in the South China Sea (SCS). Six POPs, including polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs), dioxin-like polychlorinated biphenyls (DL-PCBs), polybrominated [...] Read more.
POP data are limited in the marine environment; thus, this study aimed to investigate background persistent organic pollutant (POP) levels in oceanic deep-water-deposited particulates in the South China Sea (SCS). Six POPs, including polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs), dioxin-like polychlorinated biphenyls (DL-PCBs), polybrominated diphenyl ethers (PBDEs), polybrominated dibenzo-p-dioxins/dibenzofurans (PBDD/Fs), polychlorinated diphenyl ethers (PCDEs), and polybrominated biphenyls (PBBs), were investigated in eight pooled samples from the SCS from 20 September 2013 to 23 March 2014 and 15 April 2014 to 24 October 2014 at depths of 2000 m and 3500 m. PBDEs were the most predominant compounds, with the highest mean Σ14PBDE of 125 ± 114 ng/g dry weight (d.w.), followed by Σ17PCDD/F, Σ12PBDD/F, and Σ12DL-PCB (275 ± 1930, 253 ± 216, and 116 ± 166 pg/g d.w., respectively). Most PBDD/F, PBB, and PCDE congeners were below the detection limits. PCDDs had the highest toxic equivalency (TEQ), followed by PBDDs and DL-PCBs. Among the six POPs, PBDEs were the major components of the marine-deposited particles, regarding both concentrations and mass fluxes. Compared to 3500 m, PBDE levels were higher at a depth of 2000 m. PBDE mass fluxes were 20.9 and 14.2 ng/m2/day or 68.2 and 75.9 ng/m2/year at deep-water 2000 and 3500 m, respectively. This study first investigated POP levels in oceanic deep-water-deposited particles from existing global data. Full article
(This article belongs to the Special Issue Toxicity and Ecological Risks of Emerging Contaminants in the Marine Environment)
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13 pages, 1962 KiB  
Article
Long-Term Toxicity of 50-nm and 1-μm Surface-Charged Polystyrene Microbeads in the Brine Shrimp Artemia parthenogenetica and Role of Food Availability
by Yu Shen, Mingxing Zhang, Zhaochuan Li, Shuo Cao, Yadi Lou, Yi Cong, Fei Jin and Ying Wang
Toxics 2023, 11(4), 356; https://doi.org/10.3390/toxics11040356 - 9 Apr 2023
Cited by 3 | Viewed by 2085
Abstract
Micro and nanoplastics (MNPs) as emerging contaminants have become a global environmental issue due to their small size and high bioavailability. However, very little information is available regarding their impact on zooplankton, especially when food availability is a limiting factor. Therefore, the present [...] Read more.
Micro and nanoplastics (MNPs) as emerging contaminants have become a global environmental issue due to their small size and high bioavailability. However, very little information is available regarding their impact on zooplankton, especially when food availability is a limiting factor. Therefore, the present study aims at evaluating the long-term effects of two different sizes (50 nm and 1 μm) of amnio-modified polystyrene (PS-NH2) particles on brine shrimp, Artemia parthenogenetica, by providing different levels of food (microalgae) supply. Larvae were exposed to three environmentally relevant concentrations (5.5, 55, and 550 μg/L) of MNPs over a 14-days of exposure with two food levels, high (3 × 105~1 × 107 cells/mL), and low (1 × 105 cells/mL) food conditions. When exposed to high food levels, the survival, growth, and development of A. parthenogenetica were not negatively affected at the studied exposure concentrations. By comparison, when exposed to a low food level, a U shape trend was observed for the three measured effects (survival rate, body length, and instar). Significant interactions between food level and exposure concentration were found for all three measured effects (three-way ANOVA, p < 0.05). The activities of additives extracted from 50 nm PS-NH2 suspensions were below toxic levels, while those from 1-μm PS-NH2 showed an impact on artemia growth and development. Our results demonstrate the long-term risks posed by MNPs when zooplankton have low levels of food intake. Full article
(This article belongs to the Special Issue Toxicity and Ecological Risks of Emerging Contaminants in the Marine Environment)
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15 pages, 1623 KiB  
Article
Acute and Chronic Effects of Crude Oil Water-Accommodated Fractions on the Early Life Stages of Marine Medaka (Oryzias melastigma, McClelland, 1839)
by Fei Jin, Ying Wang, Fuwei Yu, Xing Liu, Mingxing Zhang, Zhaochuan Li, Ziwei Yao, Yi Cong and Juying Wang
Toxics 2023, 11(3), 236; https://doi.org/10.3390/toxics11030236 - 28 Feb 2023
Cited by 7 | Viewed by 2271
Abstract
Oil spill is a major marine environmental pollution issue. Research regarding the long-term effects of oil spills on the early life stage of marine fish is still limited. In this study, the potential adverse impact of crude oil from one oil spill accident [...] Read more.
Oil spill is a major marine environmental pollution issue. Research regarding the long-term effects of oil spills on the early life stage of marine fish is still limited. In this study, the potential adverse impact of crude oil from one oil spill accident which occurred in the Bohai Sea on the early life stages of marine medaka (Oryzias melastigma, McClelland, 1839) was evaluated. A 96-h acute test (larvae) and a 21-d chronic test (embryo–larvae) of water-accommodated fractions (WAFs) from crude oil were conducted, respectively. The results of the acute test showed that only the highest concentration of WAFs (100.00%) significantly affected the mortality of larvae (p < 0.01) and that the 96 h-LC50 was 68.92% (4.11 mg·L-1 expressed as total petroleum hydrocarbons (TPHs)). Larval heart demonstrated histopathological alterations in all WAF-exposed groups. The chronic test results showed that, except for larval mortality, the total hatching success (%)/hatching time of embryos in WAF treatments was not significantly different from those of the control group (p > 0.05), and no malformation was found in surviving larvae after 21 d of exposure. Nevertheless, the exposed embryos and larvae in the highest concentration of WAFs (60.00%) demonstrated significantly reduced heart rate (p < 0.05) and increased mortality (p < 0.01), respectively. Overall, our results indicated that both acute and chronic WAF exposures had adverse impacts on the survival of marine medaka. In the early life stages, the heart of the marine medaka was the most sensitive organ which showed both structural alteration and cardiac dysfunction. Full article
(This article belongs to the Special Issue Toxicity and Ecological Risks of Emerging Contaminants in the Marine Environment)
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17 pages, 4573 KiB  
Article
Amantadine Toxicity in Apostichopus japonicus Revealed by Proteomics
by Junqiang Zhao, Jianqiang Chen, Xiuhui Tian, Lisheng Jiang, Qingkui Cui, Yanqing Sun, Ningning Wu, Ge Liu, Yuzhu Ding, Jing Wang, Yongchun Liu, Dianfeng Han and Yingjiang Xu
Toxics 2023, 11(3), 226; https://doi.org/10.3390/toxics11030226 - 27 Feb 2023
Cited by 5 | Viewed by 1674
Abstract
Amantadine exposure can alter biological processes in sea cucumbers, which are an economically important seafood in China. In this study, amantadine toxicity in Apostichopus japonicus was analyzed by oxidative stress and histopathological methods. Quantitative tandem mass tag labeling was used to examine changes [...] Read more.
Amantadine exposure can alter biological processes in sea cucumbers, which are an economically important seafood in China. In this study, amantadine toxicity in Apostichopus japonicus was analyzed by oxidative stress and histopathological methods. Quantitative tandem mass tag labeling was used to examine changes in protein contents and metabolic pathways in A. japonicus intestinal tissues after exposure to 100 µg/L amantadine for 96 h. Catalase activity significantly increased from days 1 to 3 of exposure, but it decreased on day 4. Superoxide dismutase and glutathione activities were inhibited throughout the exposure period. Malondialdehyde contents increased on days 1 and 4 but decreased on days 2 and 3. Proteomics analysis revealed 111 differentially expressed proteins in the intestines of A. japonicus after amantadine exposure compared with the control group. An analysis of the involved metabolic pathways showed that the glycolytic and glycogenic pathways may have increased energy production and conversion in A. japonicus after amantadine exposure. The NF-κB, TNF, and IL-17 pathways were likely induced by amantadine exposure, thereby activating NF-κB and triggering intestinal inflammation and apoptosis. Amino acid metabolism analysis showed that the leucine and isoleucine degradation pathways and the phenylalanine metabolic pathway inhibited protein synthesis and growth in A. japonicus. This study investigated the regulatory response mechanisms in A. japonicus intestinal tissues after exposure to amantadine, providing a theoretical basis for further research on amantadine toxicity. Full article
(This article belongs to the Special Issue Toxicity and Ecological Risks of Emerging Contaminants in the Marine Environment)
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